| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,727 |
| States of Germany | 0 | - | 4.96 | 150,984 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,319 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,582 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,180 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,104 |
| Regions of Italy | 0 | - | 4.92 | 75,137 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,078 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,109 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,690 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,611 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,834 |
| Official European Union Languages | 0 | - | 4.97 | 237,585 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,272 |
| Africa Map Quiz | 0 | - | 5.00 | 2,110,040 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,401 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,422 |
| Countries of Africa | 0 | - | 5.00 | 2,519,808 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,217 |
| African East Coast | 0 | - | 4.96 | 95,467 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,324 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,731 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,658 |
| History of Italy | 0 | - | 4.55 | 31,892 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,414 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,553 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,081 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,616 |
| Flags of Africa Quiz | 0 | - | 5.00 | 466,490 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,152 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,856 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,634 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,805 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,688 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,135 |
| African Island Countries | 0 | - | 4.96 | 101,111 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,428 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 32,943 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,312 |
| Celtic Nations | 0 | - | 4.69 | 46,869 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,074 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,178 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,314 |
| Geography of Germany | 0 | - | 4.35 | 17,129 |
| History of Germany | 0 | - | 4.39 | 52,712 |
| Counties of England | 0 | - | 4.97 | 792,162 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,300 |
| Regions of France | 0 | - | 4.77 | 119,881 |
| France Immigration by Country | 0 | - | 4.72 | 76,159 |
| Famous Germans | 0 | - | 4.50 | 54,809 |
| German Groups of Things | 0 | - | 4.46 | 38,373 |
| Germany True or False? | 0 | - | 4.61 | 48,652 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,699 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,841 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,027 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,142 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,807 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,182 |
| African Diaspora - Top 10 Countries | 0 | - | 4.92 | 72,433 |
| The Only African Country ... | 0 | - | 4.98 | 128,679 |
| African Countries by a Single Clue | 0 | - | 4.92 | 67,905 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,375 |
| Countries Closest to Africa | 0 | - | 4.96 | 156,687 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,598 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,555 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,285 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,648 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,272 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,113 |
| History of Austria | 0 | - | 4.70 | 17,794 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,699 |
| Geography of the French Empire | 0 | - | 4.45 | 26,990 |
| The French Revolution | 0 | - | 4.46 | 23,856 |
| France Multiple Choice | 0 | - | 4.38 | 40,675 |
| History of France | 0 | - | 4.59 | 56,565 |
| The Vikings! | 0 | - | 4.46 | 28,282 |
| The Portuguese Empire | 0 | - | 4.58 | 12,026 |
| American to British Word Translation | 0 | - | 4.13 | 138,176 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,799 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,303 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,588 |
| Champions League Winners | 0 | - | 4.92 | 1,000,313 |
| African Great Lakes | 0 | - | 4.82 | 65,649 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,539 |
| Name a Valid African Country | 0 | - | 4.98 | 153,361 |
| Kenya Country Quiz | 0 | - | 4.86 | 34,632 |
| Tanzania Country Quiz | 0 | - | 4.90 | 32,910 |
| Morocco Country Quiz | 0 | - | 4.81 | 46,220 |
| D.R. Congo Country Quiz | 0 | - | 4.87 | 39,171 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,641 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,638 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,987 |
| Departments of France | 0 | - | 4.93 | 53,230 |
| Germany Country Quiz | 0 | - | 4.82 | 157,119 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,905 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,424 |
| England or Wales? | 0 | - | 4.94 | 45,473 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,169 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,499 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,625 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,249 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,780 |
| Slavic Languages | 0 | - | 4.68 | 54,141 |
| Word Chain - France | 0 | - | 4.38 | 42,669 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,516 |
| Italian Foods | 0 | - | 4.31 | 72,425 |
| The Mafia Quiz | 0 | - | 4.46 | 23,243 |
| History of The Netherlands | 0 | - | 4.46 | 17,352 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,327 |
| Canary Islands | 0 | - | 4.61 | 17,432 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,339 |
| British Spellings | 0 | - | 4.07 | 99,345 |
| British Groups of Things | 0 | - | 4.25 | 82,759 |
| British Acronyms | 0 | - | 4.39 | 45,694 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,989 |
| Countries of Africa by Borders in 30 Seconds | 0 | - | 4.43 | 355,188 |
| Nile River Basin Countries on a Map | 0 | - | 4.95 | 50,402 |
| Djibouti Country Quiz | 0 | - | 4.81 | 21,602 |
| Countries Closest to Ethiopia | 0 | - | 4.90 | 68,693 |
| Countries Bordering Kenya | 0 | - | 4.87 | 62,659 |
| Mauritius Country Quiz | 0 | - | 4.84 | 22,164 |
| Seychelles Country Quiz | 0 | - | 4.91 | 21,774 |
| Countries Bordering Tanzania | 0 | - | 4.96 | 70,018 |
| Liberia Country Quiz | 0 | - | 4.85 | 21,787 |
| Mali Country Quiz | 0 | - | 4.84 | 24,689 |
| Eswatini Country Quiz | 0 | - | 4.83 | 20,737 |
| Botswana Country Quiz | 0 | - | 4.90 | 22,429 |
| Lesotho Country Quiz | 0 | - | 4.83 | 20,494 |
| Countries Bordering South Africa | 0 | - | 4.97 | 92,363 |
| Countries Closest to South Africa with Exceptions | 0 | - | 4.81 | 63,857 |
| Gabon Country Quiz | 0 | - | 4.83 | 18,477 |
| Countries Bordering D.R. Congo | 0 | - | 4.97 | 64,331 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,094 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,621 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,293 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,311 |
| Name that Greek Letter | 0 | - | 4.93 | 322,453 |
| History of Spain | 0 | - | 4.29 | 21,041 |
| Languages of Spain | 0 | - | 4.36 | 23,229 |
| British to American Word Translation | 0 | - | 3.74 | 254,893 |
| British Foods by Description | 0 | - | 3.94 | 48,288 |
| British and American Word Differences | 0 | - | 2.63 | 46,821 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,543 |
| Bridges of London | 0 | - | 4.17 | 10,073 |
| British Sport Trivia | 0 | - | 4.37 | 20,403 |
| Famous Welsh People | 0 | - | 4.21 | 9,793 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,309 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,169 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,569 |
| Sudan Country Quiz | 0 | - | 4.91 | 27,544 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,535 |
| History of Russia Quiz | 0 | - | 4.49 | 31,836 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,630 |
| Famous French People | 0 | - | 4.12 | 28,122 |
| Movies Set in France | 0 | - | 4.26 | 13,095 |
| French Inventions | 0 | - | 4.08 | 13,875 |
| History of Paris | 0 | - | 4.24 | 13,628 |
| Word Chain - Germany | 0 | - | 4.31 | 22,519 |
| The Trojan War | 0 | - | 4.83 | 39,549 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,106 |
| Word Chain - Italy | 0 | - | 4.07 | 23,131 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,066 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,257 |
| Roman Emperors | 0 | - | 4.95 | 119,152 |
| Famous Nordic People | 0 | - | 4.34 | 19,970 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,564 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,701 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,293 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,495 |
| People on Money - England | 0 | - | 4.29 | 16,587 |
| Name a Valid English City | 0 | - | 4.19 | 16,669 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,496 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,085 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,885 |
| "Big Five" African Game Animals | 0 | - | 4.22 | 47,294 |
| Ten Highest HDI Countries in Africa | 0 | - | 4.70 | 67,772 |
| African Countries That Have Been to the FIFA World Cup | 0 | - | 4.70 | 38,482 |
| Australian Capitals | 0 | - | 4.92 | 62,651 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,658 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,112 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,094 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,967 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,431 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,287 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,019 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,801 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,430 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,585 |
| Europe Map Quiz | 0 | - | 5.00 | 4,744,197 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,111 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,752 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,063 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,102 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,789 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 27,858 |
| Capitals of French Regions | 0 | - | 4.45 | 16,015 |
| Capitals of German States | 0 | - | 4.74 | 28,887 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,187 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,158 |
| Ancient Greek Words | 0 | - | 4.93 | 111,057 |
